DE1553223A1

DE1553223A1 - High pressure displacement pump

Info

Publication number: DE1553223A1
Application number: DE19631553223
Authority: DE
Inventors: Spencer Philip B; Philipp Becker
Original assignee: Thompson Ramo Wooldridge Inc
Current assignee: Northrop Grumman Space and Mission Systems Corp
Priority date: 1963-06-19
Filing date: 1963-11-09
Publication date: 1969-12-18
Also published as: US3171359A; GB974653A

Description

Hochdruckverdrängungspumpe.High pressure displacement pump.

Erfindung bezieht sich auf Hochdruckverdräni-ungspurapen und insbesondere auf solche Pumpen, die einen verbesserten Verschieiöplattenaufbau haben, wobei die Belastung der Verschleißplatte nicht abgeglichen ist» damit diese Verschleißplatte gegen die Endwandung der Pumpenkammer durch die Druckunterschiede zwischen dem Einlaß und dem Auslaß der Pumpe gedruckt werden kann.Invention relates to high pressure displacement puraps and in particular to those pumps which have an improved sliding plate construction, the Load on the wear plate is not balanced »so that this wear plate against the end wall of the Pump chamber can be pressurized by the pressure differences between the inlet and the outlet of the pump.

Bisher wurde bei druckbelasteten Zahnradpumpen ein
enges Spiel zwischen den Zahnrädern und den Endwandungen des Pumpengehäuses durch die Verwendung einer
druckbelästeten Verschleißplatte aufrecht erhaltenSo far, a
tight play between the gears and the end walls of the pump housing through the use of a
maintain the pressure-loaded wear plate

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undand

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una daaurch, daß der Druck zur Versehleißplatte hin abgelassen wurde, um diese VerschleiJiplatte ge₍ en die Endwandungen der Pumpenkainmer vorzuspannen.una daaurch that the pressure was released to Versehleißplatte out at this VerschleiJiplatte ge _(the end walls of the Pumpenkainmer en bias.

Bei einem derartigen Verschleißplattenaurbau ist es jedoch schwierig, die richtige Unatgeriichenheit 'ier VerschleiiBplatte aufrecht zu erhalten, um die Verschleiüplatte gleichmäßig und rleichförmip· an einer Endwandung des rumpengehuuses abzudichten. Diese S cn v/i ri-keiten konnten bisher lediglich teilweise durch komplizierte •"■usführun/rsformen der Verschleiöplatten I ^hoben v/erden, die ganz v/esentlich die Kosten der -umpe erhöhten und die eine derartige Pumpe wegen der Kosten für Anwendungsfälle unbrauchbar machten, bei denen eine leistungsfähige billige .Pumpe erforderlich ist.With such a wear plate structure, however, it is difficult to maintain the correct inadequacy of the wear plate in order to seal the wear plate uniformly and uniformly on one end wall of the body housing. This S could cn v / i ri-speeds previously only partially through complicated • "■ usführun / rsformen the Verschleiöplatten I ^ lifted v / ground, the whole v / aterial the cost of -umpe increased and such a pump because of the cost Made useless applications in which a powerful cheap .Pump is required.

Die Erfindung hat zum Hauptziel, diese Schwierigkeiten dadurch zu überwinden, da3 ein verbesserter Verschleißplattenaufbau geschaffen wird und daß die Verschleißplatte in dichtem Zontakt mit der zugeordneten Endwandung des Gehäuses dadurch, gehalten wird, daß die Verschleiß platte den unabgeglichenen Eingangs- und iörderdrucken der Pumpe über vorbestimmten Bereichen der Platte ausgesetzt wird.The main aim of the invention is to overcome these difficulties to be overcome by the fact that an improved wear plate structure is created and that the wear plate is in close contact with the associated end wall of the housing is held by the fact that the wear plate the unbalanced input and iörderdrucken exposed to the pump over predetermined areas of the plate.

EsIt

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Ε« ist ein.weiteres Ziel üer Erfindung, eine vereinfachte und verbesserte i^orm einer avuckbeaufschlagten Zahnradr.uirä zxx {schaffen, die eine he.,artige Verpolileißplatte aufweist, die in ihrer Stellung qurcli den Druckunterechiwl r.wir-clien dem Eingangs- unu dem '1'¹Or υ erdruck der Pumpe gehalten wird und nie hinsichtlich des Aufbaues und der Betriebsweise so einfach wie möglich ausgebildet ist.Ε "is {provide ein.weiteres target üer invention to provide a simplified and improved i ^ orm a avuckbeaufschlagten Zahnradr.uirä zxx having a he., Like Verpolileißplatte that qurcli in position the Druckunterechiwl r.wir-clien the input UNU is the '1' ¹ Or υ earth pressure of the pump and held to the structure and mode of operation is designed as simple as possible with respect to never.

Es ist ein weiteres Ziel der Erfindung, eine einfache und verbesserte Form eine?" Zahnradpumpe zu schaffen, die eine druckbeaufechlagte Verschleißplatte aufweist, in der Kanäle vorgesehen sind, um die Verschleißplatte in eine Dichtungsanlage geren die Endwandung des Gehäuses durch den Unterschied zwischen dem Eingangs- und Förderdruck zu pressen, wobei die Verschleißplatte längs der Umfangswandung des Pumpengehäuses lose sitzen kann und wobei diese Verschleißplatte in einer Dichtungsanlage mit diesem Gehäuse dadurch gehalten wird, daß ein Randteil der Verschleißplatte dem Förderdruck ausgesetzt wird. Es ist ein weiteres Ziel der Erfindung, bisher bekannte druckbeaufschlagte Salinradpumpen- dadurch zu verbessern, daß Kanäle vom Einlaß in die Pumpenkarjaer vorgesehen sind, die eine Seite der Verschleißplatte dem Einlaßdruck aussetzen und daß andere Kanäle vorgesehen sind, die denIt is another object of the invention to provide a simple and improved form of "gear pump" which has a pressurized wear plate in which Channels are provided to turn the wear plate into one Sealing system geren the end wall of the housing by the difference between the inlet and delivery pressure to press, with the wear plate along the circumferential wall of the pump housing can sit loosely and this wear plate in a sealing system with this Housing is held by exposing an edge portion of the wear plate to the delivery pressure. It is Another object of the invention to improve previously known pressurized saline wheel pumps in that Channels from the inlet into the Pumpenkarjaer are provided, expose one side of the wear plate to the inlet pressure and that other channels are provided that the

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AuslaßOutlet

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Auslaß mit der Pumpenkanuner verbinden und die einen Teil der Oberfläche der Verschleißplatte dem Förderdruck aussetzen.Connect the outlet with the pump duct and one part expose the surface of the wear plate to the delivery pressure.

Ein weiteres Ziel der Erfindung ist es_f Mittel vorzusehen·, um die Verschleißplatte einer druckbeaufschlagten Zahnradpumpe einer unabgeglichenen Belastung auszusetzen und um die Verschleißplatte in einer Dichtungsanlage gegen die zugeordnete Endwandung der Pumpenkammer dadurch zu halten, daß Kanäle vorgesehen sind, welche den Einlaß mit der Pumpenkammer verbinden und die sich längs der Verschleißplatte in entgegengesetzten Hichtungen vom Einlaßende der Pumpenkämmer zu einem Bereich erstrecken, der dicht beim Hochdruckbereich der Pumpen- $ kammer liegt, wobei weitere Kanäle auf der entgegengesetzten Seite der Verschleißplatte vorgesehen sind, die sich in entgegengesetzten Hichtungen vom Auslaß der Pumpenkammer längs der Veranleißplatte zur Niederdruckseite der Pumpenkammer hin erstrecken, wobei die Belastung der Verschleißplatte zur Endwandung der Pumpenkammer hin unabgeglichen gemacht wird, um ein fluides Medium mit Förderdruck aufzunehmen, um die Versohleißplatte dicht gegen die Endwandung der Pumpenkammer zu halten.Another object of the invention, it is _f means provide · to the wear plate of a pressurized gear pump to suspend an unbalanced load and in order to keep the wear plate in a sealing abutment against the associated end wall of the pump chamber characterized in that channels are provided, which the inlet to the pump chamber connect and along the wear plate in opposite Hichtungen from the inlet end of the pump comber extend to a region which lies $ chamber close to the high-pressure region of the pump, wherein further channels are provided on the opposite side of the wear plate extending in opposite Hichtungen from the outlet Pump chamber extend along the Veranleißplatte to the low-pressure side of the pump chamber, the load on the wear plate is made unbalanced towards the end wall of the pump chamber in order to receive a fluid medium with delivery pressure in order to seal the Versohleißplatte against the Endw to hold the pump chamber.

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Ein weiteres Ziel der Erfindung ist es, eine verbesserte Form einer Versohleißplatte für eine druokbeaufschlagte Zahnradpumpe zu schaffen, welche an einer Seite eine Hute aufweist, die mit dem Einlaß zur Pumpenkammer in Verbindung steht und die sich längs der Seite der Verschleißplatte erstreckt, die an einer Endwandung der Pumpenkainmer anliegt und die sich zu einem Bereich hin erstreckt, der dicht beim Hoohdruokbereich der Kammer liegt, wobei die Versohleißplatte auf der gegenüberliegenden Seite eine Nute aufweist, die mit dem Auslaß der Pumpenkammer in Verbindung steht und die sich längs der Verschleißplatte in entgegengesetzten Richtungen vom Auslaß zur Niederdruckseite der Pumpenkammer hin erstreckt, wobei die Verschleißplatte längs ihres Randes dem Druckmedium ausgesetzt wird, um einen Dichtungskontakt zwischen der Verschleißplatte und der Umfangswandung des Pumpengehäuses an der Eintrittsseite zu erzielen. Another object of the invention is to provide an improved To create the form of a Versohleißplatte for a pressurized gear pump, which on one side a Has hats which communicate with the inlet to the pump chamber and which extend along the side of the wear plate extends, which rests against an end wall of the pump chamber and which extends to an area extends close to the Hoohdruok area of the chamber with the wear plate on the opposite Side has a groove which is in communication with the outlet of the pump chamber and which extends along the wear plate in opposite directions from the outlet to the low pressure side of the pump chamber extending towards the wear plate is exposed along its edge to the pressure medium to make sealing contact to achieve between the wear plate and the peripheral wall of the pump housing on the inlet side.

Diese und andere Ziele der Erfindung sollen in der folgenden Beschreibung unter Bezugnahme auf die Figuren der Zeichnung im einzelnen dargelegt werden. Es zeigen»These and other objects of the invention are set out in the following Description will be set forth in detail with reference to the figures of the drawing. Show it"

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tfig. 1 eine Schnittansicht einer Zahnradpumpe, welche eine Verschleißplatte aufweist, die gemäß der Erfindung ausgebildet ist und die gegen eine Wandung der Pumpenkammer anliegt,tfig. 1 is a sectional view of a gear pump which has a wear plate which is formed according to the invention and which against a The wall of the pump chamber is in contact,

tfig. 2 eine Teilschnittansicht der Pumpenkammer, die bestimmte Einzelheiten des Versohleißplattenaufbaues zeigt,tfig. Fig. 2 is a partial sectional view of the pump chamber showing certain details of the wear plate structure shows,

?ig. 3 eine Teilschnittansicht, genommen längs der Linie III-III der Fig. 2, die einen Teil des Verschleißplattenaufbaues zeigt und? ig. 3 is a partial sectional view taken along the line III-III of FIG. 2, which is part of the Wear plate structure shows and

Fig. 4 eine Teilschnittansicht einer druckbeaufsohlagten Zahnradpumpe, die gemäß der Erfindung aufgebaut ist, wobei eine abgeänderte Ausführungsform .gezeigt ist.Fig. 4 is a partial sectional view of a pressurized layer Gear pump constructed in accordance with the invention, a modified embodiment .is shown.

In -tfig. 1 ist 10 ein Pumpengehäuse. Ein Ende dieses Gehäuses kann in an sich bekannter Weise mittels einer nicht-dargestellten Endplatte verschlossen sein und das Gehäuse kann eine innere Endwandung aufweisen, die eine Endwandung einer Pumpenkammer 11 bildet. Die Pumpenkammer 11 weist eine gegenüberliegende Endwandung 12 und eine Umfangswandung 13 auf, die ganz allene in die Form einer Acht hat. Ein Einlaß 15 führt durch die umfangswandung 13 hindurch in den Bereich der Verbindung der Umfangswandungsteile des Gehäuses. Das Gehäuse 10 hatIn -tfig. 1, 10 is a pump casing. One end of this housing can be closed in a manner known per se by means of an end plate (not shown) and the housing may have an inner end wall which forms one end wall of a pump chamber 11. The pump chamber 11 has an opposite end wall 12 and a circumferential wall 13, all of which are in the shape one has eight. An inlet 15 leads through the peripheral wall 13 in the area of the connection of the Peripheral wall parts of the housing. The housing 10 has

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weiterhin einen Auslaß 16, der von diesem Gehäuse mit dem Einlaß fluchtend fortführt und der auf der Seite der Pumpenkammer angeordnet ist, die dem Einlaß gegenüberliegt. . ,furthermore an outlet 16, which from this housing with in line with the inlet and the one on the side of the Pump chamber is arranged, which is opposite to the inlet. . ,

Ein Antritbszalinrad 17 ist in x^(lig. 4 gezeigt und weist die üblichen radial sich erstreckenden, in Umfangsrichtung im Abstand voneinander angeordneten Zähne 18 auf, die einen dichten Gleitsitζ im oberen Umfangswandungsteil der Pumpenkammer 11 haben. Das Antriebszahnrad 17 ist in geeigneter Weise an einer Querwelle befestigt, die im Gehäuse 10 in einem Lager 20 mit einem ihrer Enden drehbar gelagert ist und die in geeigneter Weise am gegenüberliegenden Ende im nicht-dargeetellten Enddeckel drehbar gelagert ist.A drive pinion gear 17 is shown in x ⁽ fig. 4 and has the usual radially extending teeth 18 spaced from one another in the circumferential direction, which have a tight sliding fit in the upper peripheral wall part of the pump chamber 11. The drive gear 17 is suitably positioned attached to a transverse shaft which is rotatably mounted in a bearing 20 with one of its ends in the housing 10 and which is rotatably mounted in a suitable manner at the opposite end in the end cover not shown.

Das Zahnrad 17 kämmt mit einem Zahnrad 21 und treibt dieses an. Die Zähne des Zahnrades 21 haben einen dichten Gleitsitz mit dem unteren Umfangswandungsteil der Pumpen-The gear 17 meshes with a gear 21 and drives it. The teeth of the gear 21 have a dense one Sliding fit with the lower peripheral wall part of the pump

kammer. Das Zahnrad 21 ist in geeigneter V/eise auf einer Welle 22 montiert, die im Gehäuse 10 und im Endverschluß des Gehä-uses drehbar gelagert ist.chamber. The gear 21 is in a suitable manner on a Shaft 22 mounted, which is rotatably mounted in the housing 10 and in the end closure of the housing.

Wie in den Fig. 1 und 2 gezeigt, ist eine Verschleißplatte 25 zwischen den Seiten der Zahnräder 17 und 21 As shown in FIGS. 1 and 2, a wear plate 25 is between the sides of the gears 17 and 21

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und der Endwandung 12 der Pumpenkammer angeordnet. Es ist üblich, eine Zahnradpumpe lediglich an einem Ende mit einem Druck zu beaufschlagen. Unter bestimmten Bedingungen kann es wünschenswert sein, zwei Verschleißplatten vorzusehen, wobei je eine gegen jede Endwandung der Pumpenkammer anliegt. Wenn* zwei Verschleißplatten verwendet werden, ist der Aui'bau und die Betriebsweise einer jeden Verschleiöplatte der gleiche, so daß der Aufbau lediglich einer Verschleißplatte dargestellt und im einzelnen beschrieben werden muß.and the end wall 12 of the pump chamber. It It is common practice to pressurize a gear pump only at one end. Under certain circumstances it may be desirable to have two wear plates, one against each end wall the pump chamber is applied. If * two wear plates are used is the structure and mode of operation of each wear plate the same, so that the structure of only one wear plate is shown and must be described in detail.

Die Verschleißplatte 25 kann einen geschichteten Aufbau haben und weist eine La g erflä-che 26 auf, die zu den Zahnrädern 17 und 21 hinweist und die gleitend an diesen Zahnrädern anliegt. Im dargestellten Ausführungsbeispiel weist die Verschleißplatte 25 einen geschichteten Aufbau auf. Eine Lageroberfläche fßr die Zahnräder 17 und 21 kann jedoch auf die Verschleißplatte, falls gewünscht, mittels eines 'iblichen BeSchichtungsverfahrens aufgetragen werden.The wear plate 25 may have a layered structure and has a bearing surface 26 that faces the Gears 17 and 21 indicates and which is slidably applied to these gears. In the illustrated embodiment the wear plate 25 has a layered structure. A bearing surface for the gears 17 and 21 however, it can be applied to the wear plate using a conventional coating process if desired will.

ide in Fig. 1 dargestellte Verschl-eißplatte 25 weist im Grundriß die allgemeine Ji'orm einer Acht auf. Diese Grundrißform der Verschleißplatte entspricht der Formide wear plate 25 shown in Fig. 1 has in the plan the general Ji'orm of an eight. These The plan shape of the wear plate corresponds to the shape

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der Umfangswandung 13 der Pumpenkammer und die Verschleiß*· platte sitzt mit einem verhältnismäßig losen Sitz inner- .-halb der Umfangswandung 13. Eine Nute 27, die in Verbin-the circumferential wall 13 of the pump chamber and the wear * plate sits with a relatively loose fit inside.-half the circumferential wall 13. A groove 27, which in connection

dung mit dem Einlaß 15 steht, erstreckt sich lä-ngs der ■ Platte 25 längs des Einschnittes der Umfangsteile der Platte nach innen, l*iese Nute 27 befindet sich auf der Seite der Verschleißplatte 25, die zur Wandung 12 hinweist und ist mit Nuten 29, 29 verbunden, die sich von der Nute 27 aus in entgegengesetzten Richtungen erstraken und die im allgemeinen konformssum Umfang der Platte 25 verlaufen und in radial nach innen versetzten Abstand gegenüber dem Umfang der Platte. Die Nuten 29 erstreckention with the inlet 15, extends along the ■ Plate 25 along the incision of the peripheral parts of the plate inwards, this groove 27 is on the Side of the wear plate 25 that points towards the wall 12 and is connected to grooves 29, 29 which extend from the groove 27 in opposite directions and the generally conformal perimeter of the plate 25 run and at a radially inwardly offset distance against the perimeter of the plate. The grooves 29 extend

) sich, wie in Pig. 3 gezeigt, von der Eintritts- oder Saugpeite der Pumpe und enden an einer Durchmesserlinie A im Bereich der Hochdruckseite der Pumpe. Es ist vorteilhaft, die Nuten bis nahe an den Punkt verlaufen zu lassen, an welchem die Zahnräder den maximalen Druck des fluiden Mediums zur Förderung durch den Auslaß 16 ausbilden. ) themselves, as in Pig. 3, from the inlet or suction side of the pump and end at a diameter line A in the area of the high pressure side of the pump. It is advantageous to allow the grooves to run close to the point at which the gears develop the maximum pressure of the fluid medium for conveyance through the outlet 16.

Ähnliche Nuten 30 sind in der Seite der Verschleißplatte 25 ausgebildet, die den Nuten 27 und 29 gegenüberliegt und diese Nuten 30 erstrecken sich vom I^?örderende der Pumpe in entgegengesetzten Richtungen längs der Verschleißplatte und diese Nuten verlaufen im allgemeinenSimilar grooves 30 are formed in the side of the wear plate 25 opposite the grooves 27 and 29, and these grooves 30 extend from the I ^? conveying ends of the pump in opposite directions along the wear plate and these grooves generally run

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konform zum Umfang der Verschleißplatte bis zu Durchmesserlinien B an der Saugseite der Pumpenkammer. Der Förderdruck der Pumpe wirkt auf die Verschleißplatte längs der Nuten 30 ein und dadurch wird die Belastung der Verschleißplatte in Richtung der hydraulischen Kraft FH₁ unabgeglichen. Auf diese Weise wird die Verschleißplatte gegen eine Bewegung geha-lten und in gleichförmiger Berührung mit der Wandung 12 der Pumpenkammer gehalten«conforms to the circumference of the wear plate up to diameter lines B on the suction side of the pump chamber. The delivery pressure of the pump acts on the wear plate along the grooves 30 and thereby the load on the wear _{plate in the direction of the hydraulic force FH 1 is} unbalanced. In this way the wear plate is held against movement and kept in uniform contact with the wall 12 of the pump chamber «

Der Hand der VerschleiSplatte 25 längs der Druckseite der Pumpenkammer ist, wie in i'ig. 3 gezeigt, mit einer AbsciÄgung 33 versehen, die sich längs der r'örder-* oder Druckseite der Pumpenkammer vom Verbindungspunkt der kreisförmigen Wandteile der Verschleißplatte aus in entgegengesetzte .Sichtungen erstreckt und die graduell in die Verschleißplatte übergeht. Dieser abgeschrägte Rand bildet längs der Druckkante der Verc-eiileiöplatte einen vergrößerten Oberflächenbereich, auf den das fluide Medium mit Förderdruck einwirkt und die Terschleißplatte in Richtung Μϊρ gegen die Umfangswandung der -nimpenkammer drückt, wodurch dem verhältnismäßig losen Sitz der Versehleißplatte entgegengewirkt wird. Die Verschleißplatte wird dadurch derart gegen die Umfangswandung der lumpenkaminer gepreßt, daß eine dichtende Anlage gegen diese Umfangswandung der ^ruiapenkanimer anThe hand of the wear plate 25 along the pressure side the pump chamber is as in i'ig. 3 shown with a AbsciÄgung 33 provided, which extends along the r'örder- * or Pressure side of the pump chamber from the connection point of the circular wall parts of the wear plate from in opposite .Sektiven extends and gradually in the wear plate passes over. This beveled edge forms one along the pressure edge of the Verc-eiileiööplatte enlarged surface area on which the fluid medium acts with delivery pressure and the wear plate in the direction Μϊρ against the circumferential wall of the -nimpenkammer presses, which makes the relatively loose Seat of the wear plate is counteracted. The wear plate is thus against the circumferential wall the lumpenkaminer pressed that a sealing Plant against this circumferential wall of the ^ ruiapenkanimer

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üer li'intrittöseite der rumuenkammer geschaffen wird.via the entrance side of the Rumuenkammer is created.

Bei der in -'"i*?. 4 geaeirten weiteren Ausführung sforni der Eri'inaung ist eine Hute 35 in einer Endwandung 12a der ^umpenlciLiiiner aus gebildet. l*iese Hute 35 kann die gleiche nllfetiieine i'Orm haben wie die Muten 27 und 29f 29 und erstreckt sich längs der Wandung der I¹UiIIpenkammer zu einer Stelle, die so dicht als möglich beim Hochdruckbereich der Pumpe liegt. Eine Hute 36 ist in einer Verschleißplatte 25a rus· enildet und ist zu den Zahnrädern 17 und ?1 hin offen und weist eine Verbindung mit der Druckseite der x\impe auf und erstreckt sich um die Verschleißplatte im gleichen Ausmaß herum, wie sich die Hüten 30 längs der Ver^chleißplatte 12 erstrecken.In the further version of the Eri'inaung shown in - '"i *?. 4, a hat 35 is formed in an end wall 12a of the outer shell. This hat 35 can have the same shape as the hats 27 and 29f 29 and along the wall extending the I ¹ UiIIpenkammer to a position which is as close as possible to the high-pressure region of the pump. a hat 36 is in a wear plate 25a rus · enildet and to the gears 17 and? 1 open and has a connection to the pressure side of the x \ impe and extends around the wear plate to the same extent as the hats 30 extend along the wear plate 12.

Es ist zu erkennen, daß durch die Erfindung bisher verwendete Hochdruckzahnracpuinpen aauurch verbessert wurden, daß eine ve"c-infachte iOrm einer VerschleiSplatte geschaffen wird, deren Belastung unabgerlichen ist, wobei die Seite der VerschleiSplatte, uie gegen die Endwandung der Pumpenkanimer anliegt, dem Einlaß- oder Saugdruck aus^-esetnt wird und wobei die gegenüberliegende Seite der VerschleiüJpla-tte dem Mörderaruck der Pumpe oder dem Auslaßdruclv der Pumpe ausgesetzt wird und wobei die Ttile der Verschleißplatte, die auf diese Weise entgegengesetztIt can be seen that so far used by the invention High pressure tooth racemes were also improved, that a ve "c-infachte iOrm of a wear plate created whose load is unrelenting, with the side of the wear plate against the end wall the pump canister is applied, the inlet or suction pressure is set out of ^ and the opposite side the wear plate to the killer jerk of the pump or the The outlet pressure of the pump is exposed and the valve the wear plate opposed in this way

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gerichteten Drucken oder positiven und negativen Drucken ausgesetzt sind, aerart unabgeglichen sind, 'dr-iß eine dichte Berührung der Verschleißplatte mit der Endwandung des Itimpengehä-uses sichergestellt wird.directional printing or positive and negative printing are exposed, aerart are unbalanced, 'dr-iß a density Contact of the wear plate with the end wall of the Itimpengehä-uses is ensured.

Es ist weiterhin zu erkennen, daß die Verschleißplatt© derart aufgetaut ist, daß diese nicht mit dichter Anlage {re;^ren die Wandung des Pumpengehäuses eingesetzt werden muß, sondern mit verhältnismäßig losem Sitz in die Pumpenkfemmer eingesetzt werden kann und daß diese Platte gegen die Wendung der Pumpenkammer durch den Förderdruck des fluiden Mediums gepreßt wird, um eine Dichtungeanlage gegen die Umfang κ wan dung der Pumpenkammer zu "bewirken. Dadurch wird der Strömungsverlust vermieden, der sonst bei einer mit losem Sitz im Pumpengehäuse sitzenden Verschleißplatte auftreten würde.It can also be seen that the wear plate © is thawed in such a way that it does not have a tight fit. ^r en the wall of the pump housing must be used, but can be used with a relatively loose fit in the pump chamber and that this plate is pressed against the turn of the pump chamber by the delivery pressure of the fluid medium to a sealing system against the circumference κ wall of the pump chamber This avoids the flow loss that would otherwise occur if the wear plate was loosely seated in the pump housing.

Es wurden verschiedene Ausführungsformen der Erfindung dargestellt und beschrieben. Es können Abänderungen vorgenommen werden, die im Rahmen der Erfindung liegen.Various embodiments of the invention have been made shown and described. Changes can be made that are within the scope of the invention.

PatentansprücheClaims

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Claims

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Claims

1. Hochdruok gear pump, characterized by a housing which has a hollow inner part which forms a pump chamber and which has parallel end walls and a peripheral wall which connects these end walls to one another, this housing generally having the shape of a figure eight, a pair of intermeshing gears are arranged in the pump chamber and the circular from, parts of the Ümfangswandung the ■ "are taken umpenkammer ', t an inlet in the Pumpeakammer, the hinduroh by the Üimfangawandung, Ge and of the guide to the area of the meshing gears" _t an outlet for the Pump chamber on the opposite side of the binläft, the sole plate arranged with the »linlaß fluoh-feeti ei» · in de * Pumpeniakeiaaier, which rests against a wall of the chamber, channels, which «with the binlaö la ver

■. '*: ■' __ bond and which expose the wear plate of the Sitt-lassdruok, a hat formed in the wear plate, which opens towards the gears and which is in connection with the delivery side of the pump and which runs lengthways the different plate i »erit-

j · added sightings to the low pressure side of the pump . extends and which the Druokbelaetung the

'■ 909051/1020'■ 909051/1020

.1.1

plate makes unbalanced and which enables an attack of pressurized fluidtm medium on the wear plate »in order to press the Verrohleiijplatte in a tight system with a undw & naung ^{1 of} the pump chamber.

2 · High pressure gear pump, characterized by a housing whichB has a hollow interior containing a pump chamber and which forms parallel end walls and a peripheral wall connecting these end walls together, the chamber having the general shape a figure eight, a pair of meshing gears which are 'arranged in the pump housing and which are generally from the circular ropes of the perimeter wall. \ noinmen, a guided through the wall Inlet going into the Puapen housing and to the area of the

ν küüeaenden track bikes leads, one on the opposite Outlet located at the side, which is aligned with the inlet, a wear plate arranged in the pump chamber, which rests against a wall of the pump chamber, Passages which communicate with the inlet and which expose the wear plate to inlet pressure, a hat arranged in the wear plate, which BU opens towards the gears and that with the front

the

909861/1023 ^; 909861/1023 ^;

BAD ORIGINALBATH ORIGINAL

The pump in connection steat and the length of the exhaust plate ^{: in '} eritgepen ^ esetzten directions to the egg <tertiary direction ^{: the} pump extends and which makes the influence of the pressure on the wear plate unbalanced and the action of the pressurized fluid medium on the wear plate enables uiese wear plate to be pressed tightly against an end wall of the pump housing, the hand of the wear plate being beveled in the area of the outlet to allow such a pressure load on the wear plate su that a sealing system with the peripheral wall of the pump chamber is achieved .

Hoclidri ^ cks gear pump, characterized by a housing *, which has a hollow interior which defines a pump chamber, the overlying end walls and a circumference where the peripheral wall has the general shape of a figure eight and where this peripheral wall aese End walls connects together, a pair of meshing gears, which are arranged in the pump housing and the are generally received by the circular portions of the peripheral wall, an inlet passing through the The circumferential wall leads into the pump chamber to the area of the meshing gears and which points to the point at which the gears come out of contact, a

Outlet 909851/1023 BAD ORIGINAL

16532231653223

Outflow from the pump chamber, which passes through the circumferential wall and which is opposite the inlet and which is aligned with the inlet, a wear plate which is arranged in the pump chamber and rests against an end wall of the pump chamber, the wear plate having a groove that connects with the Inlet communicating and extending around the wear plate generally conforming to the peripheral wall of the chamber along the low pressure area of the pump chamber, the wear plate having a second groove which communicates with the outlet and which extends along the wear plate along the pressure side the Purapenkammer extends and makes unbalanced on the wear plate and the pressure load to push the wear plate around these in a tight abutment against the associated end wall of ^ this Vejrschleißplatte _# exerts on by the discharge pressure of the fluid medium a force.

4. High pressure gear pump, characterized by a housing which has a hollow interior which forms a pump chamber which has opposite end walls and a peripheral wall in the general shape of a figure eight, a pair of intermeshing gears which are arranged in the pump chamber and which in general

9098B1/10239098B1 / 1023

on the circumferential wall, an inlet leading into the pump chamber in the area of the meshing engagement of the gears, which points to the gears when they come out of the meshing engagement, an outlet leading out of the pump chamber into the area in which the gears are in Engage with each other, this outlet being aligned with the inlet, at least one wear plate which is arranged in the pump chamber and which rests against an end wall of the pump chamber and which has a bearing surface which forms a bearing for at least one of the meshing gears _f wherein the wear plate has a flute on one side facing the end wall, this flute communicating with the inlet and> wherein the wear plate has a second flute formed in the side facing the gears and which flute extends to the Gears open, and with the outlet is in connection with the on the

* ■ ■ ■ -

Pressure acting on the wear plate too and around the wear plate to the Enäwandurtg by the pressure acting on the wear plate Pre-tensioning fluid

5, high pressure gear pump, characterized by a housing, which has a hollow interior »the one Puapen

IO9851 /1Ό13IO9851 / 1Ό13

*™ Io ™** ™ Io ™ *

chamber forms, the opposite has Enüw & miun / -en and whose circumferential wall has the general norm of an eight, a pair of meshing gears / which are placed in the pump canine are and which bear generally on the circumferential wall, an inlet leading into the pump canine, the is arranged in the area of the meshing gears and which points to the gears that are out of meshing engagement get out, one leading out of the rump chamber Outlet, which is arranged in the region of the meshing engagement of the gears and which is aligned with the inlet, a in the pump chamber arranged wear plate, which against a Bndwandung of the pump chamber rests and its circumference corresponds to the shape of the circumferential wall of the pump channel and which is a bearing member for the meshing gears Ml-

det, w © be.i this wear plate has opposite paral-Ie ₁ Ie surfaces _f this wear plate has a groove in one surface, which opens towards the end wall and which is in connection with the inlet, and which extends around this surface of the wear plate into the pressure area of the pump, the wear plate - also having a groove in the opposite surface, which is open to the gears and which extends from the pressure zone of the pump - along the wear plate extends towards the suction zone of the pump and which ensures the application of pressure to the wear and tear

platte 1023-1- r , plate 1023-1- r,

- 19 -

plate makes unbalanced in order to press the wear plate against the wall.

6. Hochdruekzahnr.'iU pump, characterized by a housing, which has a hollow interior defining a spark chamber, opposing end walls and a Has circumferential wall in the general iiOrm of a figure of eight, that connects the end walls together, a pair meshing gears arranged in the pump caunüer and which are generally in the circular parts of the peripheral wall, one into the pump chamber this circumferential turn through inlet leading to the The Kämuibbereich the Saline Wheels. And the to the area indicates the gears in which they disengage, an outlet for the pump chamber that passes through the peripheral wall passes through and that with the inlet aligned, at least one in the pump chamber arranged Versohleißplatte against an end wall of the pump chamber and which has a groove which is open towards the end wall of the chamber and which is in communication with the inlet and which extends around the wear plate extends around along the suction area of the pump chamber and adjacent to the pressure area of the pump chamber changes, with the Versohleißplatte a second

groove

909851/1023909851/1023

* <ute, which with the outlet and the pressure side of the Pumpenkaiuier is in connection and the eich in the opposite one Side of the transfer plate is located and fjie on this transfer plate along the pressure area the xHm ^ onkdimmer extends and which a bias causes the wear plate in a tight system against the Endwanaurig, with the wear plate on one side, your outlet adjacent, beveled or is undercut to press the Ve'rechleißplatte in a tight system against the perimeter wall of the! - "umpengehäuses Hurch the force of the under pressure to effect fluid Lediims, which by the * -outlet is required.

7 «High-pressure gear pump, characterized by a housing which has a hollow interior that contains a pump chamber forms which opposing indwandungen and a Has circumferential wall in the general form of a figure eight, a pair of meshing gears that are in the pump chamber between the side walls and in close contact with the Circumferential wall are arranged and in opposite Clockwise directions driven v / earth and the one another to raise cutting circles, an inlet to the pump chamber, - the one with the intersecting partial circles

the 909851/1023 BAD ORIGINAL

of the gears is aligned and which points to the file at which the gears disengage, an outlet from the pump chamber which continues from the opposite side and which is flush with the inlet, at least one wear plate _f which is arranged in the pump chamber and which rests against an end wall of the pump chamber and which has generally the same circumferential shape as the peripheral wall of the pump chamber and which has a bearing surface "facing the gears, a groove which extends along the wear plate from the inlet in opposite views, WO7 at this groove is in communication with the inlet and this groove generally conforms to the circumference of the wear ^{plate and this groove extends along 1 of} the wear plate into the pressure area of the pump, a wide groove which is provided in xler wear plate, see this second groove opening towards the gears and where they are ^ wide grooves around the wear plate from the outlet in opposite directions to the suction area of the pump and this second groove is connected to the outlet in order to press the wear plate into a tight fit against the wall through the delivery pressure of the pump,

Jk BAD ORIGINAL

8. High pressure gear purape, characterized by a housing which has a hollow inner roughness which forms a pump chamber, which has opposite indwandungen and a Urafangswandung in the general shape of a figure eight, a pair of meshing gears which are arranged in 4 Puapenkamiaer »wipe these side walls and the are arranged in close contact with the circumferential wall in the 'Puapenkammer and which are driven in opposite directions and which have intersecting!

kaamer leading inlet, which is aligned with the intersecting pitch circles of the gears and which leads to the bearing d4r gears indicates on which these disengaged get one leading out of the pump chamber

^ Outlet, the inlet on the opposite side rom and it is in line with the inlet, at least one

_v Tersole plate which is arranged in the pump chamber and which rests against an end wall of the pump chamber and which has the general shape of the circumferential wall of the pump chamber and which has a bearing surface which points to the gears, a hat which extends in length from the wear plate in opposite directions Sightings from J & nlaß aue, with the hat old dea Sinl & ä-connected xu> * where this jute ia all-

gemelata «

BADORlGlNAt

common conforms to the circumference of the wear plate and said groove extending circumferentially into the pressure area of the pump, a second groove, the is arranged in the .Verschl eiiäplatte and which is to the 2 gears open and generally with the first Groove aligns and never moves around the wear plate in opposite directions from the outlet to the The area of the pump is extended, the groove with the communicates with the outlet to seal the wear plate against the end wall through the To press the delivery pressure of the pump, whereby the wear plate has a beveled or undercut part, which is directed towards the outlet and which extends the length of the wear plate from the outlet around part of the circumference extends around in opposite directions,. to counteract the wear plate in a sealing system to press the circumferential wall of the pump chamber by the delivery pressure of the pump »

9. High pressure feed pump, characterized by a housing, which has a hollow interior containing a pump chamber which has spaced-apart end walls and intersecting cylindrical Peripheral wall parts. which is generally the shape

* £,^s:;,„..,·:v·-■ " einer* £, ^ s:;, ".., ·: v · - ■" one

9 0 9.851/1023 .BADORlQiNAL9 0 9.851 / 1023 .BADORlQiNAL

have an eight, an inlet that goes into the pump chamber through the section section of the cylindrical wall parts through an outlet from the pump chimney on the opposite side of the inlet and that is flush with the inlet 'a pair meshing idler wheels arranged in the pump chamber and which bear against the cylindrical wall part and which are a fluid medium along the cylindrical Wall part push it forward from the inlet ssum outlet, at least a wear plate which is arranged in the pump chamber and the circumference of which the peripheral wall parts and the one La gprplatte for the gears forms, wherein the wear plate has a hat, which points to the adjacent end wall and which calibrate

along the wear plate from the inlet in the opposite direction EnHungen extends to locations which are arranged adjacent to the pressure range of the pump, wherein the wear plate has a second groove on the opposite end Has side that opens towards the gears and that with the pressure side of the pump chamber in Connection is and extends from the outlet along the wear plate to the suction area of the pump chamber extends and which makes the pressure load of the wear plate unbalanced to this closure plate by the

Print 909851/1023 BADORIOlNAt

Pressure of the pumped liquid against the neighboring one Press the end wall out, whereby the Veroohleißplatte has a beveled edge part, which is 1-tngs this Ver .: wear plate from the outlet in opposite directions "■" • seals, thus never making Verbo'.ileiüplatte in an abutment against the peripheral wall parts of the spark chamber is pressed »

1Ö, iioohdruck gear pump, marked "mrch a housing, soft has a hollow interior that contains a pump chamber forms, which are spaced end walls and intersecting cylindrical peripheral wall parts which are generally in the shape of a figure eight, has an inlet into the pump chamber passes through the incision part of the cylindrical wall parts, an outlet which emerges from the umpenkammer on the opposite side of the inlet and which is aligned with the inlet, a pair of meshing Gears which are arranged in the pump chamber and which are adapted to the cylindrical Wpndung parts and which propel a fluid medium along the cylindrical wall parts from the inlet to the outlet, at least a wear plate that is placed in the beer pump whose circumference corresponds to the circumferential wall parts of the pump chamber, this wear plate being a bearing

BAD ORIGINAL - smooth

909851/1023909851/1023

Forms plate for the gearwheels, with a wear-lath having a groove ^ which opens to the gearwheels and which is in connection with the pressure side of the pump chamber and the length of the pump chamber extends from the outlet to the suction area of the pump chamber, one located in the end wall of the wear plate adjacent to it, which opens towards the wear plate and which extends along the end wall from the inlet in opposite directions to a point adjacent to the high pressure region of the pump.

11. High pressure gear pump, characterized by a housing, which uat a hollow interior that has a pump camera forms, which are arranged at a distance from one another, one ■ has other cutting, cylindrical circumferential wall parts, which generally form a figure eight, an inlet leading into the pump chamber through the intersecting portion of the cylindrical wall parts passes through, an outlet, which from the pump chamber on the opposite side leads out and which is aligned with the inlet, a pair of meshing gears, which are arranged in i * <m pump housing are and which are received by the cylindrical wall parts and the eir. fluid medium along the cylindrical wall part opening towards the AuelaS drive forward, at least one «wear plate, which is in

dt?

909851/1023 _BAD original909851/1023 _BAD original

the pump canister is arranged and conforms to the Circumferential wall parts of the pump chamber is formed and which forms a bearing plate for the gears, a groove arranged in der.Endwanaung of the pump chamber, the facing the wear plate and the one with the Inlet is connected, this groove extending along the Swing in opposite directions from the inlet extends from up to points * which are adjacent to the high pressure area of the pump, whereby the wear plate has a beveled edge in the high pressure area of the pump, which the wear plate in sealing contact with the peripheral wall part of the Purapengehäusee holds.

909851/1023 ^⁰ «*>*«.909851/1023 ^ ⁰ «*> *«.

Claims

High pressure gear pump with a housing which is a Pumpenkariip.er has the parallel walls and has a circumferential wall connecting these end walls together connects and which has the general shape of a figure eight, with a pair of intermeshing in the housing Gears are arranged in the pump chamber and wherein the pump chamber has an inlet and an outlet, characterized by a wear plate (25) t die is arranged in the pump chamber and against a End wall of the pump chamber rests, the wear plate having channels on one side, aie with the inlet the pump are in communication and wherein the wear plate on the opposite side has channels that communicate with the outlet to unbalance the pressure exerted on the wear plate and to press the wear plate into a tight fit against the end wall of the pump chamber »

2 «gear pump according to claim 1, characterized in that that the channels which are connected to the inlet extend along the Niederdruckbereicb.es of the pump chamber and that the canals that ver · »·. are bound along the high pressure area of the

Extend pump chamber.

BATH ORIGINAL

909851/1023909851/1023

3. Gear pump according to claim 2, characterized in that that the shape of the cannula is generally of the ^ 'orm of Pump kemmer corresponds. · - ·. - ..-.

4ο gear pump, according to one of claims 1, 2 or 3 »thereby characterized in that the wear plate has an edge part (33) which is rericntet towards the outlet and which beveled or undercut to adjust the outlet pressure take up to the Verachieißplatte in a ^ ichtungsanlare against the circumference of the pump chambers on the Press the inlet side of the pump.

BAD ORIGINAL 90985t/1023 .BAD ORIGINAL 90985t / 1023.